<template>
  <div :class="[
    'login-wrapper',
    ['', 'login-form-right', 'login-form-left'][direction]
  ]">
    <a-form ref="formRef" :model="form" :rules="rules" class="login-form ele-bg-white">
      <h4>{{ t('login.title') }}</h4>
      <a-form-item name="username">
        <a-input allow-clear size="large" v-model:value="form.username" :placeholder="t('login.username')">
          <template #prefix>
            <user-outlined />
          </template>
        </a-input>
      </a-form-item>
      <a-form-item name="password">
        <a-input-password size="large" v-model:value="form.password" :placeholder="t('login.password')">
          <template #prefix>
            <lock-outlined />
          </template>
        </a-input-password>
      </a-form-item>
      <a-form-item name="code" hidden>
        <div class="login-input-group">
          <a-input allow-clear size="large" v-model:value="form.code" :placeholder="t('login.code')" autocomplete="off">
            <template #prefix>
              <safety-certificate-outlined />
            </template>
          </a-input>
          <a-button class="login-captcha" @click="changeCaptcha">
            <img v-if="captcha" :src="captcha" alt="" />
          </a-button>
        </div>
      </a-form-item>
      <a-form-item v-show="false">
        <a-checkbox v-model:checked="form.remember">
          {{ t('login.remember') }}
        </a-checkbox>
        <!-- <router-link
          to="/forget"
          class="ele-pull-right"
          style="line-height: 22px"
        >
          {{ t('login.forget') }}
        </router-link> -->
      </a-form-item>
      <a-form-item>
        <a-button block size="large" type="primary" :loading="loading" @click="submit">
          {{ loading ? t('login.loading') : t('login.login') }}
        </a-button>
      </a-form-item>
      <!-- <div class="ele-text-center" style="padding-bottom: 32px">
        <qq-outlined class="login-oauth-icon" style="background: #3492ed" />
        <wechat-outlined class="login-oauth-icon" style="background: #4daf29" />
        <weibo-outlined class="login-oauth-icon" style="background: #cf1900" />
      </div> -->
    </a-form>
    <div class="login-copyright">
      <div>宁波亚当斯科技有限公司 版权所有</div>
      <a target="_blank" href="http://www.beian.gov.cn/portal/registerSystemInfo?recordcode=33020802000014"
          style="display:inline-block;text-decoration:none;height:20px;line-height:20px;">
          <img src="../../assets/icon.png" style="float:left;" />
          <p style="float:left;height:20px;line-height:20px;margin: 0px 0px 0px 5px; color:#FFFFFF;">浙公网安备 33020802000014号
          </p>
        </a>
    </div>
    <!-- 多语言切换 -->
    <div style="position: absolute; right: 30px; top: 20px; z-index: 999">
      <i18n-icon placement="bottomLeft" :style="{ fontSize: '18px', color: '#fff' }" />
    </div>
    <!-- 实际项目去掉这段 -->
    <!-- <div style="position: absolute; left: 30px; top: 20px; z-index: 999">
      <a-radio-group v-model:value="direction" size="small">
        <a-radio-button :value="2">居左</a-radio-button>
        <a-radio-button :value="0">居中</a-radio-button>
        <a-radio-button :value="1">居右</a-radio-button>
      </a-radio-group>
    </div> -->
  </div>
</template>

<script setup>
import { ref, reactive, computed, unref } from 'vue';
import { useI18n } from 'vue-i18n';
import { useRouter } from 'vue-router';
import { message } from 'ant-design-vue/es';
import {
  UserOutlined,
  LockOutlined,
  SafetyCertificateOutlined,
  QqOutlined,
  WechatOutlined,
  WeiboOutlined
} from '@ant-design/icons-vue';
import I18nIcon from '@/layout/components/i18n-icon.vue';
import { getToken } from '@/utils/token-util';
import { goHomeRoute, cleanPageTabs } from '@/utils/page-tab-util';
import { login, getCaptcha } from '@/api/login';

const { currentRoute } = useRouter();
const { t } = useI18n();
let code2 = ''

// 登录框方向, 0 居中, 1 居右, 2 居左
const direction = ref(0);

//
const formRef = ref(null);

// 加载状态
const loading = ref(false);

// 表单数据
const form = reactive({
  username: '',
  password: '',
  code: '99',
  remember: true
});

// 验证码 base64 数据
const captcha = ref('');

// 验证码内容, 实际项目去掉
const text = ref('');

// 表单验证规则
const rules = computed(() => {
  return {
    username: [
      {
        required: true,
        message: t('login.username'),
        type: 'string',
        trigger: 'blur'
      }
    ],
    password: [
      {
        required: true,
        message: t('login.password'),
        type: 'string',
        trigger: 'blur'
      }
    ],
    code: [
      {
        required: true,
        message: t('login.code'),
        type: 'string',
        trigger: 'blur'
      }
    ]
  };
});

/* 跳转到首页 */
const goHome = () => {
  const { query } = unref(currentRoute);
  goHomeRoute(query.from);
};

/* 提交 */
const submit = () => {
  if (!formRef.value) {
    return;
  }
  formRef.value.validate().then(() => {
    if (form.code == "99") {
      form.code = code2;
    }
    if (form.code.toLowerCase() !== text.value) {
      message.error('验证码错误');
      return;
    }
    loading.value = true;
    login(form)
      .then((msg) => {
        message.success(msg);
        cleanPageTabs();
        goHome();
      })
      .catch((e) => {
        message.error(e.message);
        loading.value = false;
      });
  });
};

/* 获取图形验证码 */
const changeCaptcha = () => {
  // 这里演示的验证码是后端返回base64格式的形式, 如果后端地址直接是图片请参考忘记密码页面
  getCaptcha()
    .then((data) => {
      captcha.value = data.base64;
      // 实际项目后端一般会返回验证码的key而不是直接返回验证码的内容, 登录用key去验证, 你可以根据自己后端接口修改
      text.value = data.text;
      // 自动回填验证码, 实际项目去掉这个
      // form.code = data.text;
      code2 = data.text;
      formRef.value?.clearValidate();
    })
    .catch((e) => {
      message.error(e.message);
    });
};

if (getToken()) {
  goHome();
} else {
  changeCaptcha();
}

document.body.addEventListener('keyup', (e) => {
  if (e.key == "Enter") {
    submit()
  }
})
</script>

<style lang="less" scoped>
/* 背景 */
.login-wrapper {
  padding: 48px 16px 0 16px;
  position: relative;
  box-sizing: border-box;
  background-image: url('@/assets/bg-login.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  min-height: 100vh;

  &:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
  }
}

/* 卡片 */
.login-form {
  width: 360px;
  margin: 0 auto;
  max-width: 100%;
  padding: 0 28px;
  box-sizing: border-box;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
  border-radius: 2px;
  position: relative;
  z-index: 2;

  h4 {
    padding: 22px 0;
    text-align: center;
  }
}

.login-form-right .login-form {
  margin: 0 15% 0 auto;
}

.login-form-left .login-form {
  margin: 0 auto 0 15%;
}

/* 验证码 */
.login-input-group {
  display: flex;
  align-items: center;

  :deep(.ant-input-affix-wrapper) {
    flex: 1;
  }

  .login-captcha {
    width: 102px;
    height: 40px;
    margin-left: 10px;
    padding: 0;

    &>img {
      width: 100%;
      height: 100%;
    }
  }
}

/* 第三方登录图标 */
.login-oauth-icon {
  color: #fff;
  padding: 5px;
  margin: 0 12px;
  font-size: 18px;
  border-radius: 50%;
  cursor: pointer;
}

/* 底部版权 */
.login-copyright {
  color: #eee;
  text-align: center;
  padding: 48px 0 22px 0;
  position: relative;
  z-index: 1;
}

/* 响应式 */
@media screen and (min-height: 640px) {
  .login-wrapper {
    padding-top: 0;
  }

  .login-form {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: -230px;
  }

  .login-form-right .login-form,
  .login-form-left .login-form {
    left: auto;
    right: 15%;
    transform: translateX(0);
    margin: -230px auto auto auto;
  }

  .login-form-left .login-form {
    right: auto;
    left: 15%;
  }

  .login-copyright {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
  }
}

@media screen and (max-width: 768px) {

  .login-form-right .login-form,
  .login-form-left .login-form {
    left: 50%;
    right: auto;
    margin-left: 0;
    margin-right: auto;
    transform: translateX(-50%);
  }
}
</style>
